Which of the following statements about the use of turnbuckles is correct?
a. Hook-and-hook turnbuckles are preferred over eye-and-eye turnbuckles for rigging.
b. Turnbuckles are used to adjust the length of rigging connections.
c. Turnbuckles are best tightened with a pipe wrench at least 24" (61 cm) in length.
d. When using multi-legged slings or hitches, two turnbuckles should be used on each leg.
b. Turnbuckles are used to adjust the length of rigging connections.
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